"When odors are new, that can be a sign that your body is not functioning properly," says disordered-eating specialist Edward Tyson, M.D. Three common offenders:

ODOR: BOOZE

REASON: For extreme low-carbers: When ketones (the by-product of a body burning fat instead of carbs) become too elevated in the blood, they can release an alcohol-like odor.

ODOR: BLEACH

REASON: High-protein diets can produce a bleach or ammonia scent, a sign that muscle might be being used instead of fat for fuel, which can slow metabolism, making it harder to keep off weight.

ODOR: GARLIC

REASON: Picky eaters or those trying to restrict their calorie intake may over-spice the select (or bland) things they regularly consume, which can cause a garlicky aroma.

BOTTOM LINE

If you're catching weird whiffs, see your GP and, ideally, an R.D., who will help get your bo